package demo12;

public class Test {

    synchronized public void increase(){
        count++;
    }

    public void increase2(){
        synchronized(this){
            count++;
        }
    }

    private static int count=0;

    public static void main(String[] args) throws InterruptedException {
        Object locker = new Object();
        Thread t1 = new Thread(()->{
            for(int i=0;i<50000;i++){
                synchronized(locker){
                    count++;
                }
            }
        });

        Thread t2 = new Thread(()->{
            for(int i=0;i<50000;i++){
                synchronized(locker){
                    count++;
                }
            }
        });

        t1.start();
        t2.start();

        t1.join();
        t2.join();

        System.out.println("count="+count);
    }
}
